Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.16 49/52] phy: mediatek: Fix missing check in mtk_mipi_tx_probe | Date | Mon, 17 Jan 2022 11:58:50 -0500 |
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From: Miaoqian Lin <linmq006@gmail.com>
[ Upstream commit 399c91c3f30531593e5ff6ca7b53f47092128669 ]
The of_device_get_match_data() function may return NULL. Add check to prevent potential null dereference.
Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20211224082103.7658-1-linmq006@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/phy/mediatek/phy-mtk-mipi-dsi.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c index 28ad9403c4414..67b005d5b9e35 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c @@ -146,6 +146,8 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev) return -ENOMEM; mipi_tx->driver_data = of_device_get_match_data(dev); + if (!mipi_tx->driver_data) + return -ENODEV; mipi_tx->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(mipi_tx->regs)) -- 2.34.1
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